Bilgin, Tunay. “Matrix Transformations in the Sequence Spaces L_∞^V(P, S) and C_0^V(P,S)”. Annales Mathematicae Silesianae, vol. 16, Jan. 2003, pp. 7-16, https://trrest.vot.pl/ojsus/index.php/AMSIL/article/view/14103.